View photos of the medicinal plant Heuchera rubescens (Pink alumroot), profiled in Medicinal Plants of the Western Mountain States.

From Medicinal Plants of the Western Mountain States:

Alumroot’s use is alluded to by the root’s pinkish (sometimes whitish) inner coloration and astringent taste. When chewed it is drying and constricting to surface membranes (a common reaction to tannin–oriented plants).